Internal medical devices for delivery of therapeutic agent...

A - Human Necessities – 61 – N

Patent

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A61N 1/30 (2006.01)

Patent

CA 2614572

The invention generally relates to internal (e.g., implantable, insertable, etc.) drug delivery devices which contain the following: (a) one or more sources of one or more therapeutic agents; (b) one or more first electrodes, (c) one or more second electrodes and (d) one or more power sources for applying voltages across the first and second electrodes. The power sources may be adapted, for example, to promote electrically assisted therapeutic agent delivery within a subject, including electroporation and/or iontophoresis. In one aspect of the invention, the first and second electrodes are adapted to have tissue of a subject positioned between them upon deployment of the medical device within the subject, such that an electric field may be generated, which is directed into the tissue. Furthermore, the therapeutic agent sources are adapted to introduce the therapeutic agents into the electric field.

De manière générale, l'invention concerne des dispositifs d'administration médicamenteuse internes (par ex., implantables, insérables, etc.) qui comprennent (a) une ou plusieurs sources d'un ou plusieurs agents thérapeutiques, (b) une ou plusieurs premières électrodes, (c) une ou plusieurs secondes électrodes, et (d) une ou plusieurs sources d'énergie destinées à appliquer des tensions sur lesdites premières et secondes électrodes. Les sources d'énergie peuvent être destinées, par exemple, à faciliter l'administration d'agents thérapeutiques assistée électriquement à un sujet, et peuvent inclure une électroporation et/ou une iontophorèse. Dans un aspect de l'invention, lesdites premières et secondes électrodes sont conçues de façon que le tissu d'un sujet soit situé entre elles lors d'un déploiement du dispositif médical dans le corps de ce sujet, d'où la possibilité de générer un champ électrique, lequel est dirigé vers le tissu. En outre, les sources d'agents thérapeutiques permettent l'introduction des agents thérapeutiques dans le champ électrique.

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